<template>
  <view class="cart-container" v-if="cart.length !== 0">
    <!-- 收货地址组件 -->
    <my-address></my-address>
    <!-- 商品列表的标题区域 -->
    <view class="cart-title">
      <!-- 左侧的图标 -->
      <uni-icons type="shop" size="18"></uni-icons>
      <!-- 右侧的文本 -->
      <text class="cart-title-text">购物车</text>
    </view>

    <!-- 循环渲染购物车中的商品信息 -->
    <u-swipe-action v-for="(goods, i) in cart" :key="i" @click="deleteClickHandler(goods)" :options="options">
      <view><my-goods :goods="goods" :show-radio="true" :show-num="true" @radio-change="radioChangeHandler" @num-change="numberChangeHandler"></my-goods></view>
    </u-swipe-action>

    <!-- 使用自定义的结算组件 -->
    <my-settle></my-settle>
  </view>
  <!-- 空白购物车区域 -->
  <view class="empty-cart" v-else>
    <image src="/static/cart_empty@2x.png" class="empty-img"></image>
    <text class="tip-text">空空如也~</text>
  </view>
</template>

<script>
import badgeMix from '@/mixins/tabbar-badge.js';
import { mapState, mapMutations } from 'vuex';

export default {
  mixins: [badgeMix],
  computed: {
    ...mapState('m_cart', ['cart'])
  },
  data() {
    return {
      options: [
        {
          text: '删除',
          style: {
            backgroundColor: '#dd524d'
          }
        }
      ]
    };
  },
  methods: {
    ...mapMutations('m_cart', ['updateGoodsState', 'updateGoodsCount', 'removeGoodsById']),
    radioChangeHandler(e) {
      this.updateGoodsState(e);
    },
    numberChangeHandler(e) {
      this.updateGoodsCount(e);
    },
    deleteClickHandler(goods) {
      this.removeGoodsById(goods.goods_id);
      this.$u.toast('删除成功!');
    },
  }
};
</script>

<style lang="scss">
.cart-container {
  padding-bottom: 50px;
}
.cart-title {
  height: 40px;
  display: flex;
  align-items: center;
  padding-left: 5px;
  border-bottom: 1px solid #efefef;

  .cart-title-text {
    font-size: 14px;
    margin-left: 10px;
  }
}
.empty-cart {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 150px;
  .empty-img {
    width: 90px;
    height: 90px;
  }
  .tip-text {
    font-size: 12px;
    color: #ccc;
    margin-top: 15px;
  }
}
</style>
